Citazione Stile APA (7a Edizione)

Soars, L., & Soars, J. (1998). New Headway: English course, Upper intermediate Student's book. Oxford University Press.

Citazione stile Chigago Style (17a edizione)

Soars, Liz, e John Soars. New Headway: English Course, Upper Intermediate Student's Book. Oxford: Oxford University Press, 1998.

Citatione MLA (9a ed.)

Soars, Liz, e John Soars. New Headway: English Course, Upper Intermediate Student's Book. Oxford University Press, 1998.